Originally Posted by Mwood
Im in california. I believe its a ca van. its a 93.
possible that it isnt moisture but a previous owner mounted something heavy up there? there are mounts for something else under the solar panel.
sounds not ideal.. I guess I'll need to pull the inside roof panel and inspect.
Yes although pulling down the headliner usually just reveals the underside of chopped fiberglass and resin........but you never know......
Also be aware that removing the headliner results in the canvas ending up around your ankles; it's attached to the roof with the same screws that hold the headliner up....so you need about 5 hands to reassemble.
There's an easy modification for that....cutting thin 1/8"-1/4" plywood strips and fasten the canvas to the roof with those. You can use the hole pattern in the headliner pieces as a drill template to get the screw hole in the same places.....then reinstall the headliner. In my van I fabricated a new headliner that is only held up by the two lifting pads that the crossbars attach to, no screws around the perimeter.
The gory details start in post 18 here: